Franklin a



FRANKLIN A. CURTIS, or EAST SAGINAVEMICHIGAN.

Letters Patent No. 79,132, dated July 7, 1868.-

' mrn'ovnn WATER AND FIRE-PROOF ROOFING-comment);

- t the Stigthltlt rtfemh in in this! Eritetsfiatgut mt mating um if the same.

TO ALL WHOM IT MAY CONCERN:

Be i t knoivn that I, FRANKLIN 5. Courts, of East Saginav'v, in the county of Saginaw, and State of Michigan, have invented a newand useful Improvement in Elastic Fire and Water-Proof Roofing; andI do hereby declare the following to be a true and accurate description thereof, suflicieut to-enable others skilled in the art {0 make and use this impz ovIed roofing. V I I The nature of 'thisfinve'htion is to manufacture an elastic fire and water-proof compound for roofing, which may be usedniith oinithbfit felting-or paper, and which will be what it purports,4'. e., perfectly'water and fireproof, and will not be afiected by the variations oftemperature in any climate. 1

In order to accomplish thislend, I take thirty (30) pounds of-coal-tar, ten (10) pounds of ivheat or rye flour, and one hundred (100) pounds of water-lime, and mix, thoroughlycold, so as to make a thick marten.

adding, it required, a. little more of the ingredients pi'oportionately, 'to'bringthe'inixture to the proper consistence. Then the mortar should be spread evenly upon the roof, and one hundred (100) pounds of common sand be sifted upon it. i

In manufacturing a compound for roofing purposes, I am able to do away with the necessity of heating the coal-tar, as is ordinarily done, thereby saving very materially in time, labor, and cost.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- The roofing-compound, when composed of coal-tar, wheat or rye flour, water-lime, and sand, mixed in a.

:old state, as herein described;

Y FRANKLIN A. corms,

Witnesses:

Wii. J. LOVELAND, B. M. Tnomesox. 

